McMaster University. McMaster University (commonly referred to as McMaster or Mac) is a public research university located in Hamilton, Ontario, Canada. The main campus is located on 121 hectares (300 acres) of land near the residential neighbourhoods of Ainslie Wood and Westdale, adjacent to Hamilton's Royal Botanical Gardens.
Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.
A number of problems can cause a plant's leaves to turn yellow, such as too much sun, lack of nitrogen, iron chlorosis or pest infestations, depending on the type of plant and its current habitat. number of problems can cause a plant's leaves to turn yellow, such as too much sun, lack of nitrogen, iron chlorosis or pest infestations, depending on the type of plant and its current habitat.